Prepared for: Toronto Hydro Energy Services Inc. 14 Carlton Street Toronto, Ontario M5B 1K5. Prepared by:

Transcription

1 EMISSION SUMMARY AND DISPERSION MODELLING REPORT IN SUPPORT OF A RENEWABLE ENERGY APPROVAL APPLICATION TORONTO HYDRO ENERGY SERVICES INC. LESLIE ST., TORONTO, ONTARIO Prepared for: Toronto Hydro Energy Services Inc. 14 Carlton Street Toronto, Ontario M5B 1K5 Prepared by: SENES Consultants 121 Granton Drive, Suite 12 Richmond Hill, Ontario L4B 3N4 October 2014 Printed on Recycled Paper Containing Post-Consumer Fibre

2 EMISSION SUMMARY AND DISPERSION MODELLING REPORT IN SUPPORT OF A RENEWABLE ENERGY APPROVAL APPLICATION TORONTO HYDRO ENERGY SERVICES INC. LESLIE ST., TORONTO, ONTARIO Prepared for: Toronto Hydro Energy Services Inc. 14 Carlton Street Toronto, Ontario M5B 1K5 Prepared by: SENES Consultants 121 Granton Drive, Suite 12 Richmond Hill, Ontario L4B 3N4 Prepared by: Malcolm Smith, P.Eng. Senior Environmental Engineer Reviewed by: John Peters, M.Eng., P.Eng. Director, Atmospheric Sciences Group October 2014 Printed on Recycled Paper Containing Post-Consumer Fibre

3 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Version Control Rev Date Revision Description Reviewer Initials 1.0 January October 2014 Original ESDM Report in Support of REA Application ESDM Report Update in Support of New Site Layout CCM JFP October 2014 SENES Consultants

4 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant TABLE OF CONTENTS Page No. EXECUTIVE SUMMARY AND EMISSION SUMMARY TABLE... I 1.0 INTRODUCTION AND FACILITY DESCRIPTION Purpose and Scope of ESDM Report Description of Processes and NAICS Code(s) Description of Products and Raw Materials Process Flow Diagram Operating Schedule Facility Production Limit INITIAL IDENTIFICATION OF SOURCES AND CONTAMINANTS Sources and Contaminants Identification Table ASSESSMENT OF THE SIGNIFICANCE OF CONTAMINANTS AND SOURCES Identification of Negligible Sources and Contaminants Rationale for Assessment OPERATING CONDITIONS, EMISSION ESTIMATING AND DATA QUALITY Description of Operating Conditions Explanation of the Methods Used to Calculate Emission Rates Sample Calculations Assessment of Data Quality SOURCE SUMMARY AND SITE PLAN Source Summary Table Site Plan AIR DISPERSION MODELLING Dispersion Modeling Input Summary Table Coordinate System Meteorology and Land Use Data Terrain Receptors Building Downwash Averaging Times Dispersion Modelling Options Dispersion Modelling Input and Output Files EMISSION SUMMARY TABLE AND CONCLUSIONS October 2014 SENES Consultants

5 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 7.1 Emission Summary Table Assessment of Contaminants with No MOE POI Limits Conclusions REFERENCES APPENDICES APPENDIX A APPENDIX B APPENDIX C APPENDIX D APPENDIX E SUPPORTING CALCULATIONS SUPPORTING INFORMATION FOR ASSESSMENT OF NEGLIGIBILITY ELECTRONIC COPIES OF THE COMPLETE AERMOD INPUT AND OUTPUT FILES MANUFACTURER S SPECIFICATIONS COPY OF EXISTING REA October 2014 SENES Consultants

6 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant LIST OF TABLES TABLE ES.1 TABLE 1 TABLE 2 TABLE 3 TABLE 4 EMISSION SUMMARY TABLE SOURCES AND CONTAMINANTS IDENTIFICATION TABLE SOURCE SUMMARY TABLE DISPERSION MODELING INPUT SUMMARY TABLE EMISSION SUMMARY TABLE LIST OF FIGURES FIGURE 1 FIGURE 2 FIGURE 3 FIGURE 4 FIGURE 5 FIGURE 6 SITE LOCATION PLAN LAND USE ZONING DESIGNATION PLAN DISPERSION MODELLING PLAN PROCESS FLOW DIAGRAM 3 KM SATELLITE IMAGE TERRAIN ELEVATION AND DISPERSION MODELLING RECEPTORS October 2014 SENES Consultants

7 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant EXECUTIVE SUMMARY AND EMISSION SUMMARY TABLE This Emission Summary and Dispersion Modelling (ESDM) Report was prepared to support an application for amendment to Renewable Energy Approval (REA) Number EXJG6. The ESDM Report was prepared in accordance with s.26 of O. Reg. 419/05 to support the REA application. In addition, guidance in the Ministry publication Procedure for Preparing an Emissions Summary and Dispersion Modelling Report dated March 2009 (ESDM Procedure Document) was followed as appropriate. Toronto Hydro Energy Services Inc. (TH Energy) is proposing to install and operate a Biogas Cogeneration Plant (the Facility) to be located adjacent to the Ashbridges Bay Waste Water Treatment Plant (ABTP) at 7 Leslie St., Toronto, Ontario. The Facility will be comprised of seven (7) biogas-fired reciprocating engine generators, all of which are capable of firing with natural gas under emergency conditions, with one (1) generator also capable of firing with natural gas under normal operating conditions. The Facility will also include the operation of one (1) flare. The Facility is located in a mainly industrial area, with some nearby recreation areas (i.e., public parks and boat club). The proposed TH Energy Facility will generate electricity under the Ontario Power Authority s Process and Systems Upgrade Initiative (PSUI) as part of the SaveOnEnergy program and generate hot water for supply to the adjacent ABTP. The North American Industry Classification System (NAICS) code that applies to the Facility is Other Electric Power Generation (for operation with biogas) and also Fossil-Fuel Electric Power Generation (for operation of one generator with natural gas). As such, the Facility is subject to s. 20 of O.Reg. 419/05. Therefore, the modelled impact of contaminant emissions has been assessed using the U.S. EPA AERMOD model as ½-hour, 1-hour and 24-hour maximum point of impingement (POI) concentrations and the standards listed in Schedule 3 of O.Reg. 419/05, as well as the applicable limits listed in the MOE publication, Summary of Standards and Guidelines to Support Ontario Regulation 419: Air Pollution Local Air Quality dated April 2012 (List of MOE POI Limits). The Emission Summary Table for O.Reg. 419/05 Schedule 3 Contaminants shows a listing of the significant air contaminants with Schedule 3 standards, the total facility maximum emission rate and maximum point-of-impingement (POI) concentration for each contaminant, the Schedule 3 POI limit used to evaluate each contaminant and the maximum percent of the POI limit calculated by dispersion modelling, and the maximum percent of the POI limit. The maximum emission rates for each significant contaminant emitted from the significant sources were calculated in accordance with s. 11 of O.Reg. 419/05 and the data quality assessed following the process outlined in the requirements of the ESDM Procedure Document October 2014 ES-i SENES Consultants

8 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant The Facility will be capable of operating 24-hours per day, 365 days per year. Of the four (4) contaminants listed in the Emission Summary Table that have limits in the List of MOE POI Limits all the predicted POI concentrations are below the corresponding limits; for example the POI concentration of NOx is 166 µg/m 3 for a 24-hr averaging period at 83% of the standard of 200 µg/m 3 and 300 µg/m 3 for a 1-hr averaging period at 75% of the standard of 400 µg/m 3. At 83%, NOx has the highest concentration relative to the corresponding MOE POI Limit. The next highest contaminant is CO at 63% of the standard of 6,000 for a ½-hour averaging period October 2014 ES-ii SENES Consultants

9 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Table ES.1 Emission Summary Table Toronto Hydro Biogas Cogeneration Facility Contaminant Total Facility Air Dispersion Averaging Maximum POI MOE POI Limiting Effect Regulation Percentage of Contaminant Name CAS # Emission Rate Model Used Period Concentration Limit Schedule # MOE POI Limit (g/s) (hours) (ug/m3) (ug/m3) (%) NOx AERMOD Health Schedule 3 75% Health Schedule 3 83% SPM AERMOD Visibility Schedule 3 3% CO AERMOD ½ 3750* 6,000 Health Schedule 3 63% SO AERMOD Health & Vegetation Schedule 3 3% Health & Vegetation Schedule 3 2% Notes on Column labeled Maximum POI Concentration: - Maximum concentrations do not include anomalous meteorological conditions, which were removed per MOE Air Dispersion Modelling Guideline Section * 1-hour value converted to 1/2 hour by multiplying by October 2014 ES - iii SENES Consultants

10 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 1.0 INTRODUCTION AND FACILITY DESCRIPTION This section provides a description of the facility as required by sub paragraph 1 of s. 26(1) of O.Reg. 419/05. Toronto Hydro Energy Services Inc. (TH Energy) is proposing to install and operate a Biogas Cogeneration Plant (the Facility) to be located adjacent to the Ashbridges Bay Waste Water Treatment Plant (ABTP) at 7 Leslie St., Toronto, Ontario. The Facility is located in a mainly industrial area, with some nearby recreation areas (i.e., public parks and boat club). The location of the Facility is presented in Figure 1 Site Location Plan and the land use designation of the site and surrounding area is presented in Figure 2 Land Use Zoning Designation Plan. The location of the discharges from each source is presented in Figure 3 Dispersion Modelling Plan; the location of each of the sources is specified with the source reference number. 1.1 PURPOSE AND SCOPE OF ESDM REPORT This ESDM Report was prepared to support an application for an amendment to the existing Renewable Energy Approval (REA) Number EXJG6. The Facility will be comprised of seven (7) biogas-fired reciprocating engine generators, all of which are capable of firing with natural gas under emergency conditions, with one (1) generator also capable of firing with natural gas under normal operating conditions. The Facility will also include the operation of one (1) flare. This Emission Summary and Dispersion Modelling (ESDM) Report was prepared in accordance with sub paragraph 1 of s.26 of O. Reg. 419/05. In addition, guidance in the Ministry publication Procedure for Preparing an Emissions Summary and Dispersion Modelling Report dated March 2009 (ESDM Procedure Document) PIBS 3614e02 was followed as appropriate. For ease of review and to promote clarity this ESDM Report is structured to correspond to each of the items listed in the Ministry publication 2009 Emission Summary and Dispersion Modelling Report Check-list PIBS 5357e. 1.2 DESCRIPTION OF PROCESSES AND NAICS CODE(S) The proposed TH Energy Facility will produce power and thermal energy (in the form of hot water) for the ABTP, utilizing seven (7) engine generator sets that operate on biogas produced by digesters at the adjacent ABTP, with one (1) generator also capable of firing with natural gas under normal operating conditions. The North American Industry Classification System (NAICS) code October SENES Consultants

11 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant that applies to the Facility is Other Electric Power Generation (for operation with biogas) and also Fossil-Fuel Electric Power Generation (for operation of one generator with natural gas). As such, the Facility is subject to s. 20 of O.Reg. 419/05 and the modelled impact of contaminant emissions have been assessed using the U.S. EPA AERMOD model as ½-hour, 1-hour and 24-hour maximum point of impingement (POI) concentrations and the standards listed in Schedule 3 of O.Reg. 419/05, as well as the applicable limits listed in the MOE publication, Summary of Standards and Guidelines to Support Ontario Regulation 419: Air Pollution Local Air Quality dated April 2012 (List of MOE POI Limits). The maximum emission rates for each significant contaminant emitted from the significant sources were calculated in accordance with s. 11 of O.Reg. 419/05 and the data quality assessed following the process outlined in the requirements of the ESDM Procedure Document. 1.3 DESCRIPTION OF PRODUCTS AND RAW MATERIALS The TH Energy biogas cogeneration plant will utilize biogas produced in existing digesters at the ABTP to generate electricity and thermal energy in the form of hot water. The biogas is produced by anaerobic digestion of the biodegradable material in municipal sewage waste at the ABTP facility, and is comprised primarily of methane and carbon dioxide. Currently, the biogas is used as fuel to heat water in existing boilers at the ABTP. If the biogas supply is not sufficient to operate all seven (7) generators then one (1) generator will fire with natural gas under normal operating conditions. The Facility will generate MW of electricity from seven (7) reciprocating engine generators, rated at MW each, under the Ontario Power Authority s Process and Systems Upgrade Initiative (PSUI) as part of the SaveOnEnergy program. Heat resulting from the biogas combustion process in the engine generator sets is recovered from engine cooling, lube oil cooling and from the exhaust flue gases by heat exchangers, which produce the hot water for use at the ABTP. Biogas pipes leading to, and hot water pipes leading from, the TH Energy Facility will be installed across a shared property line. The biogas generators are 4-stroke lean burn reciprocating engines. The engine operates based on the exothermic reaction of combusting biogas and air in a combustion chamber. This creates gases of high temperature and pressure, which are permitted to expand causing the movement of pistons inside each cylinder, which rotate a shaft. The rotational energy produced by the engine is converted to electrical energy by a generator connected to the end of the shaft. Excess heat from the combustion process is directed to a heat recovery unit, which produces hot water and is directed to ABTP. The exhaust gases from the generators exit through separate 0.46 m (18 inch) diameter stacks located 7.5 m above each generator enclosure roof and 12.5 m above grade. Each generators will be located inside an individual enclosure October SENES Consultants

12 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Digester gas arriving at the site will pass through a treatment system which will require periodic flaring. A 5 m tall enclosed flare will be located adjacent to the east property line. The Facility is subject to the requirements of the new Green Energy Act and Renewable Energy Approvals process (O.Reg. 359/09). The Facility is under 15 MW, therefore an environmental screening as defined under the Ontario Ministry of the Environment s Guide to Environmental Assessment Requirements for Electricity Projects does not apply. The generators are reciprocating engines; therefore, MOE Guideline A-5 also does not apply. In addition, six (6) of the seven (7) reciprocating engines will be fuelled by biogas, therefore the draft policy for reciprocating engines generating power in non-emergency situations also does not apply for these generators. The one (1) engine that can be fuelled by natural gas under normal operating conditions will be equipped with selective catalytic reduction (SCR) technology and will comply with MOE emission limits for small combustion engine generators. Under emergency conditions only the other six (6) engines will be powered by natural gas to allow ABTP to operate as required. As required under O.Reg.359/09 Section 36, at least 95% of the electricity generated at the facility will be from a renewable energy source. Operations under emergency conditions will be documented and available for verification. Product usages and associated information is provided in greater detail in Appendix A Supporting Calculations. Refer to Table 1 Sources and Contaminants Identification Table, which tabulates the individual sources of emissions at the Facility. 1.4 PROCESS FLOW DIAGRAM Refer to Figure 4 Process Flow Diagram for a simplified graphical representation of the process at the Facility. 1.5 OPERATING SCHEDULE The Facility will operate 24 hours a day, 7 days a week, 365 days a year. 1.6 FACILITY PRODUCTION LIMIT The Facility will be capable of generating MW of electricity for the ABTP. The MW will be derived from seven (7) MW biogas reciprocating engine generators (see Appendix D Manufacturer s Specifications) October SENES Consultants

13 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 2.0 INITIAL IDENTIFICATION OF SOURCES AND CONTAMINANTS The following section provides an initial identification of all the sources and contaminants emitted at the Facility, as required by sub paragraphs 2 to 4 of s.26(1) of O.Reg. 419/05. There may be general ventilation from the Facility that only discharges uncontaminated air from the workspaces or air from the workspace that may include contaminants that come from commercial office supplies, building maintenance products or supplies and activities; these types of ventilation sources are considered to be negligible and were not identified as sources at the Facility. 2.1 SOURCES AND CONTAMINANTS IDENTIFICATION TABLE Table 1 Sources and Contaminants Identification Table tabulates all of the emission sources and contaminants expected from the Facility. This table provides the information required by sub paragraphs 2 to 4 of s. 26(1) of O. Reg. 419/05. The expected contaminants emitted from each source are also identified in Table 1; for example, the expected contaminants emitted from the biogas generator stacks are NOx, TSP, CO and SO2. Each of the identified sources has been assigned a source reference number, for example the biogas generators have been designated STCK-1 to STCK-7. The location of the discharges from each of the significant sources is presented in Figure 3 Dispersion Modelling Plan; the location of each significant source is specified with the source reference number October SENES Consultants

14 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 3.0 ASSESSMENT OF THE SIGNIFICANCE OF CONTAMINANTS AND SOURCES This section provides an explanation for each source identified as negligible in Table 1 Sources and Contaminants Identification Table, as required by sub paragraph 5 of s.26(1) of O. Reg. 419/05. In accordance with s.8 of O. Reg. 419/05 emission rate calculations and dispersion modelling do not have to be performed for emissions from negligible sources or for the emission of negligible contaminants from significant sources. 3.1 IDENTIFICATION OF NEGLIGIBLE SOURCES AND CONTAMINANTS Of the eight (8) sources listed in Table 1 Sources and Contaminants Identification Table, no sources have been identified as negligible; all eight (8) sources are considered significant. For example, biogas fired generator (STCK-1) is considered a significant source. These sources were included in the dispersion modelling for the site. Some contaminants have been identified as negligible. 3.2 RATIONALE FOR ASSESSMENT For each contaminant in Table 1 that has been identified as negligible, there is an accompanying documented rationale, for example the rationale for H2S from the flare as negligible is Table B-1 of the ESDM Procedure Document Screened out with dispersion factors. The technical information required to substantiate the argument that each of the identified contaminants is negligible is presented in Appendix B Supporting Information for Assessment of Negligibility October SENES Consultants

15 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 4.0 OPERATING CONDITIONS, EMISSION ESTIMATING AND DATA QUALITY This section provides a description of the operating conditions used in the calculation of the emission estimates and an assessment of the data quality of the emission estimates for each significant contaminant from the Facility as required by sub paragraphs 6 and 7 of s. 26(1) of O. Reg. 419/05. In accordance with s. 8 of O. Reg. 419/05, emission rate calculations and dispersion modelling do not have to be performed for emissions from negligible sources or for the emission of negligible contaminants from significant sources. 4.1 DESCRIPTION OF OPERATING CONDITIONS Paragraph 1 of subsection 10(1) of O. Reg. 419/05 states that the approved dispersion model must be used with the operating conditions that result in the maximum POI concentration for each significant contaminant, according to the averaging period for the relevant MOE POI Limit corresponding to that contaminant. The operating condition that corresponds to the maximum POI concentration may occur when the Facility is at the maximum production level or running at a lower level or the process of transition. In preparing this ESDM Report, all operating scenarios for all the significant sources at the Facility were assessed for the contaminants that are relevant to this application for an Environmental Compliance Approval under section 9 of the EPA. For each significant contaminant, and according to the averaging period for the relevant MOE POI Limit corresponding to that contaminant, the operating scenario used for this Facility that results in the maximum POI concentration is the scenario where all significant sources are operating simultaneously at their individual maximum rates of production. In accordance with paragraph 6 of subsection 26(1) of O. Reg. 419/05, Appendix A of this ESDM Report includes a description of the operating condition for each contaminant that is emitted in significant amounts, including a description of the operating conditions of the significant sources that result in the maximum POI concentration for the contaminant, ensuring that the operating conditions correspond to the averaging period of the MOE POI Limit(s). Conservatism has been built into the emission estimates by assuming that all pieces of equipment are operating concurrently, that the seven (7) engine generators are operating at maximum design capacity when firing with biogas and that the flare is operating at maximum capacity for three (3) hours during a single day. Modelling has been completed based on simultaneous maximum operations for the seven (7) generators and the flare October SENES Consultants

16 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 4.2 EXPLANATION OF THE METHODS USED TO CALCULATE EMISSION RATES The maximum ½-hour, 1-hour and 24-hour emission rates for each significant contaminant emitted from the significant sources were calculated in accordance with requirements of the ESDM Procedure Document. The emission rate for each significant contaminant emitted from a significant source was estimated and the methodology for the calculation is documented in Table 2 Source Summary Table. For example, the emission of NOx from the biogas-fired generators (STCK-1 to STCK-7) were calculated using an emission factor (EF) technique. 4.3 SAMPLE CALCULATIONS The technical rationale, including sample calculations, required to substantiate emission rates presented in Table 2 Source Summary Table is documented in Appendix A Supporting Calculations. 4.4 ASSESSMENT OF DATA QUALITY This section provides a description of the assessment of the data quality of the emission estimates for each significant contaminant from the facility, as required by sub paragraph 7iii of s.26(1) of O. Reg. 419/05. The assessment of the data quality of the emission rate estimates for each significant contaminant emitted from the significant sources was performed in accordance with the requirements of sub paragraph 7iii of s.26(1) of O. Reg. 419/05. For example, the emissions of NOx from the biogasfired generators (STCK-1 to STCK-7) were estimated using manufacturer supplied emission factors and were applied to the maximum rate of operation for each generator. Therefore, the emission rate estimate is not likely to be an underestimate of the actual emissions rates and use of these emission rates will result in a calculated concentration at POI greater the actual concentrations. These sources were documented as having Data Quality of Average, which is generally acceptable according to requirements of the ESDM Procedure Document. For each contaminant, the emission rate was estimated and the data quality for the estimate was documented in Table 2 Source Summary Table. The assessment of data quality for each source listed in Table 2 is documented in Appendix A Supporting Calculations. All the emission rates listed in Table 2 are documented as having Average Data Quality and correspond to the operating scenario where each of the eight (8) significant sources are operating at their individual maximum rates of operation. Therefore, the emissions listed in Table 2 are not October SENES Consultants

17 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant likely to be an underestimate of the actual emission rates and use of these emission rates will result in a calculated concentration at POI at least as high as the actual concentrations October SENES Consultants

18 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 5.0 SOURCE SUMMARY AND SITE PLAN This section provides the table required by sub paragraph 8 and the site plan required by sub paragraph 9 of s. 26(1) of O. Reg. 419/ SOURCE SUMMARY TABLE The emission rate estimates for each source of significant contaminants are documented in Table 2 Source Summary Table in accordance with the requirements of sub paragraph 8 of s.26(1) of O. Reg. 419/05. For each source of significant contaminants the following parameters are referenced: Contaminant, Chemical Abstract Society (CAS) reference number, Source reference number, Source description, Stack parameters (flow rate, exhaust temperature, diameter, height above grade, height above roof), Location referenced to local UTM coordinate systems presented on Figure 3 Dispersion Modelling Plan, Maximum emission rate, Averaging period, Emission estimating technique, Estimation data quality, and Percentage of overall emission. 5.2 SITE PLAN The locations of the emission sources listed in Table 2 Source Summary Table are presented in Figure 3 Dispersion Modelling Plan; the location of each of the significant sources is specified with the source name. The location of the property line is indicated on Figure 3, with the end points of each section of the property-line clearly referenced to the UTM coordinate system (NAD 83, Zone 17). The location of each source is referenced to the UTM coordinate system in Table 2 Source Summary Table. The heights of the structures that are part of the Facility are also indicated in Figure 3. Figure 3 shows the site layout and the location of modeled sources drawn to scale. The property line coordinates are summarized with the modeling parameters in Section 6.0. Figures 1 and 2 show the general site area and zoning respectively. There are no child care facilities on the property October SENES Consultants

19 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 6.0 AIR DISPERSION MODELLING This section provides a description of how the dispersion modelling was completed for the Facility to predict the maximum POI concentrations, as required by sub paragraphs 10 to 13 of s.26(1) of O. Reg. 419/05. The Facility is subject to s.20 of O.Reg. 419/05. Therefore, the modelled impact of contaminant emissions has been assessed using the U.S. EPA AERMOD model as ½-hour, 1-hour and 24-hour maximum point of impingement (POI) concentrations and compared to O.Reg. 419/05 Schedule 3 standards. Dispersion modelling was completed in accordance with the MOE s Air Dispersion Modelling Guideline for Ontario, Version 2.0 dated March 2009 (ADMGO). A general description of the input data used in the dispersion model is provided below and summarized in Table 3. The AERMOD modelling system has been identified by the MOE as one of the approved dispersion models under O. Reg. 419/05, and currently includes the Plume Rise Model Enhancements (PRIME) algorithms for assessing the effects of buildings on air dispersion. The use of a more refined model, such as AERMOD, is necessary when assessing air quality against Schedule 3 Standards. It is also applicable to rural and urban areas, flat and complex terrain, surface and elevated releases, and multiple sources (including point, area, and volume sources). The AERMOD modelling system is made up of the AERMOD dispersion model, the AERMET meteorological pre-processor and the AERMAP terrain pre-processor. The following approved dispersion model and pre-processors were used in the assessment: AERMOD dispersion model; AERMAP surface pre-processor ; and, BPIP building downwash pre-processor. AERMET was not used in this assessment as a pre-processed MOE meteorological dataset was used October SENES Consultants

20 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 6.1 DISPERSION MODELING INPUT SUMMARY TABLE A description of the way in which the approved dispersion model was used is provided in Table 3 Dispersion Modelling Input Summary Table. This table meets both the requirements of s.26(1)11 and sections 8-17 of O. Reg. 419/05 and follows the format provided in the ESDM Procedure Document. As per Section 4.5 of the ADMGO, the significant sources at the Facility were classified as either point or volume sources. The source data required for each source was determined according to the procedures provided in the ADMGO. The locations of the eight (8) modelled sources are shown in Figure 3 Dispersion Modelling Plan. The location of the property line in relation to the dispersion modelling sources is also presented in Figure COORDINATE SYSTEM The Universal Transverse Mercator (UTM) coordinate system, as per Section of the ADMGO, was used to specify model object sources, buildings and receptors. All coordinates were defined in the North American Datum of 1983 (NAD83). 6.3 METEOROLOGY AND LAND USE DATA In this assessment, the AERMOD model was run using a MOE pre-processed 5-year dispersion meteorological dataset (i.e., surface and profile files), last updated in 2007, in accordance with paragraph 1 of s.13(1) of O. Reg. 419/05. As the Facility is located in the geographical coverage of the MOE Toronto District Office, the meteorological dataset for the Central Region was used. Sub paragraph 10 of s.26(1) of O. Reg. 419/05 requires a description of the local land use conditions if meteorological data, as described in paragraph 2 of s.13(l) of O. Reg. 419/05, was used. The land use surrounding the Facility is characterized as industrial, with some nearby recreation areas (i.e., public parks and boat club) and Lake Ontario to the south, as illustrated in Figure 2 - Land Use Zoning Designation Plan and Figure 5 3 km Satellite Image. As a result, the MOE s Crops meteorological dataset is used. As described in Section 6.6 of the ADMGO, for 1-hour concentrations, the 8-hours with the highest 1-hour average predicted concentrations in each single meteorological year may be discarded. For 24-hour concentrations, the highest 24-hour average predicted concentration in each meteorological year may be discarded. For compliance assessments the MOE will consider the highest concentration after elimination of these meteorological anomalies. Meteorological anomalies were discarded for the model runs October SENES Consultants

21 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 6.4 TERRAIN Terrain data used in this assessment was obtained from the MOE (7.5 minute format) and is illustrated in Figure 6. DEM files used in this assessment include: 0874_2.DEM 0874_3.DEM 0875_2.DEM 0875_3.DEM 0876_2.DEM 0876_3.DEM 6.5 RECEPTORS Receptors were chosen based on recommendations provided in Section 7.1 of the ADMGO, which is in accordance with s.14 of O. Reg. 419/05. Specifically, a nested receptor grid, centered on the main stacks, was placed as follows: a) 20 m spacing within 200 m; b) 50 m spacing from m; c) 100 m spacing from 500-1,000 m; d) 200 m spacing from 1,000-2,000 m; and, e) 500 m spacing from 2,000-5,000 m. In addition to using the nested receptor grid, receptors were also placed every 10 metres along the property line. The area of modelling coverage is illustrated in Figure 7 Dispersion Modelling Receptors. There is no child care facility, health care facility, senior's residence, long-term care facility or an educational facility located at the Facility. Furthermore, the nearest POI is located greater than 5 metres from the area from which the point of emissions are located. As such, same structure contamination was not considered. 6.6 BUILDING DOWNWASH A building or structure is considered sufficiently close to a stack to cause wake effects when the distance between the stack and the nearest part of the building is less than or equal to five (5) times the lesser of the building height or the projected width of the building. All buildings and structures within the Area of Influence were input into the current version of the U.S. EPA s Building Profile Input Program for Prime (BPIP-PRIME) for calculating downwash effects. The inputs into this October SENES Consultants

22 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant pre-processor include the coordinates and heights of the buildings and stacks. The output data from BPIP is used in the AERMOD building wake effect calculations. The PRIME plume rise algorithms include vertical wind shear calculations (important for buoyant releases from short stacks [i.e., stacks at release heights within the recirculation zones of buildings]). The PRIME algorithm also allows for the wind speed deficit induced by the building to change with respect to the distance from the building. These factors improve the accuracy of predicted concentrations within building wake zones that form in the lee of buildings. The BPIP input file is provided in Appendix C (Dispersion Modelling Data). 6.7 AVERAGING TIMES The shortest time scale that AERMOD predicts is a 1-hour average value. Schedule 3 standards of O. Reg. 419/05 have been applied to this Facility; all of these standards, except carbon monoxide, are based on 1-hour or 24-hour averaging times, which are easily provided by AERMOD. Carbon monoxide has a half-hour averaging period. In this case, a conversion from a 1 hour averaging period to the appropriate half-hour averaging period was completed using the MOE recommended conversion factor of 1.2, as documented in the ADMGO. This was completed within the concentration converter within Lakes Software interface. 6.8 DISPERSION MODELLING OPTIONS The options used in the AERMOD dispersion model are summarized in the table below. Modelling Parameter Description Used in this assessment? DFAULT Specifies that regulatory default options will be used Yes CONC Specifies that concentration values will be calculated Yes BETA Specifies that capped and horizontal stack releases will be used No DDPLETE Specifies that dry deposition will be calculated No WDPLETE Specifies that wet deposition will be calculated No FLAT Specifies that the non-default option of assuming flat terrain will be used No NOSTD Specifies that the non-default option of no stacktip downwash will be used No AVERTIME Time averaging periods calculated 1-hr and 24-hr October SENES Consultants

23 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant URBANOPT Allows the model to incorporate the effects of increased surface heating from an urban area on pollutant dispersion No under stable atmospheric conditions URBANROUGHNESS Specifies the urban roughness length (m) No FLAGPOLE Specifies that receptor heights above local ground level are allowed on the receptors No 6.9 DISPERSION MODELLING INPUT AND OUTPUT FILES The dispersion model input data are summarized in the Dispersion Modelling Input Summary Table (Table 3). Electronic copies of the input files for the AERMOD model have been submitted with this report (Appendix C) on compact disc (CD) October SENES Consultants

24 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 7.0 EMISSION SUMMARY TABLE AND CONCLUSIONS This section provides the table required by sub paragraph 14 of s.26(1) of O. Reg. 419/05 and provides an interpretation of the results as required by the ESDM Procedure Document. 7.1 EMISSION SUMMARY TABLE A POI concentration for each significant contaminant emitted from the Facility was calculated for each operating scenario based on the calculated emission rates listed in Table 2 Source Summary Table and the output from the approved dispersion model presented in Appendix C. The results are presented in Table 4 Emission Summary Table. This table follows the format provided in the ESDM Procedure Document. For each source of significant contaminants the following parameters are referenced: Contaminant name, Chemical Abstract Society (CAS) reference number, Total facility emission rate, Approved dispersion model used, Maximum POI concentration, Averaging period for the dispersion modelling, MOE POI limit, Indication of the limiting effect, Schedule in Regulation 419/05, and The percentage of standard or indication of the likelihood of an adverse effect. The POI concentrations listed in Table 4 were compared against criteria listed in the Summary of Standards and Guidelines to Support Ontario Regulation 419: Air Pollution Local Air Quality dated April 2012 (List of Ministry POI Limits). Of the four (4) contaminants listed in the Emission Summary Table that have limits in the List of MOE POI Limits all the predicted POI concentrations are below the corresponding limits; for example the POI concentration of NOx is 166 µg/m 3 for a 24-hr averaging period at 83% of the standard of 400 µg/m 3 and 300 µg/m 3 for a 1-hr averaging period at 75% of the standard of 200 µg/m 3. At 83%, NOx has the highest concentration relative to the corresponding MOE POI Limit. The next highest contaminant is CO at 63% of the standard of 6,000 for a ½-hour averaging period. It should be noted that per Section 6.6 of the ADMGO anomalous meteorological conditions were not considered. This was completed by the Lakes Software model interface where the October SENES Consultants

25 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant MAXTABLE viewer automatically discards anomalous meteorological conditions based on O.Reg. 419/ ASSESSMENT OF CONTAMINANTS WITH NO MOE POI LIMITS Sub paragraph 14 subsection viii of s.26(1) O. Reg. 419/05 requires an indication of the likelihood, nature and location of any adverse effect if the contaminant is not listed in any of Schedules 1, 2 and 3. All contaminants in this assessment have MOE POI limits. 7.3 CONCLUSIONS The ESDM Report was prepared in accordance with s.26 of O. Reg. 419/05. In addition, guidance in the ESDM Procedure Document was followed as appropriate. The Facility is subject to s. 20 of O.Reg. 419/05. Therefore, the modelled impact of contaminant emissions has been assessed using the U.S. EPA AERMOD model as 1-hour and 24-hour maximum point of impingement (POI) concentrations and compared to O.Reg. 419/05 Schedule 3 standards. The emission rate estimates for each source of significant contaminants are documented in Table 2 Source Summary Table. Data quality for both sources is considered to be Average. Conservatism has been built into the emissions estimates by choosing maximum production capacity, simultaneous operation, and conservative parameters for use in the calculations. Emissions are not likely to be under predicted from the site. A POI concentration for each significant contaminant emitted from the Facility was calculated based on the calculated emission rates and the output from the U.S. EPA AERMOD model (an approved dispersion model); the results are presented in Table 4 Emission Summary Table. The POI concentrations listed in Table 4 were compared against criteria listed in the Summary of Standards and Guidelines to Support Ontario Regulation 419: Air Pollution Local Air Quality dated April 2012 (List of Ministry POI Limits). Of the four (4) contaminants listed in the Emission Summary Table that have limits in the List of MOE POI Limits all the predicted POI concentrations are below the corresponding limits; for example the POI concentration of NOx is 166 µg/m 3 for a 24-hr averaging period at 83% of the standard of 200 µg/m 3 and 300 µg/m 3 for a 1-hr averaging period at 75% of the standard of 400 µg/m 3. At 83%, NOx has the highest concentration relative to the corresponding MOE POI Limit. The next highest contaminant is CO at 63% of the standard of 6,000 for a ½-hour averaging period. This ESDM Report demonstrates that the Facility can operate in compliance with O. Reg. 419/ October SENES Consultants

26 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant 8.0 REFERENCES Ontario Ministry of the Environment, Air Dispersion Modelling Guideline of Ontario. Version 2.0, March. Ontario Ministry of the Environment, Summary of STANDARDS and GUIDELINES to Support Ontario Regulation 419: Air Pollution Local Air Quality. Standards Development Branch, April. Ontario Ministry of the Environment, Procedure for Preparing an Emission Summary and Dispersion Modelling Report. Version 2.0, March October SENES Consultants

27 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Table 1 Sources and Contaminants Identification Table Source Source General Expected Significant? Information Description/Title Location Contaminants (Yes/No) Rationale Source ID STCK-1 STCK-2 STCK-3 STCK-4 STCK-5 STCK-6 STCK-7 FLARE Biogas-fired Generator Biogas-fired Generator Biogas-fired Generator Biogas-fired Generator Biogas-fired Generator Biogas-fired Generator Biogas-fired Generator Flare North side of building North side of building North side of building North side of building North side of building North side of building North side of building Adjacent to East Property Line NOx SPM CO NOx SPM CO NOx SPM CO NOx SPM CO NOx SPM CO NOx SPM CO NOx SPM CO NOx SPM CO SO 2 H 2 S Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Table B-1 of the ESDM Procedure Document - Screened-Out with Dispersion Factors ESDM Report SENES Consultants

28 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Table 2 Source Summary Table Source Data Emissions Data Stack Stack Stack Stack Height Stack Height Source Maximum Averaging Estimated Emission Percentage Contaminant CAS Source Description Volumetric Temperature Inner Above Above Coordinates Emission Period Emissions Data of Overall Identifier Flow Rate Diameter Grade Roof Rate Emission (m 3 /s) ( o C) (m) (m) (m) (x,y) (g/s) Technique Quality NOx STCK-1 Biogas Generator C (635135, ) hr & 24-hrs EF Average 14% NOx STCK-2 Biogas Generator C (635140, ) hr & 24-hrs EF Average 14% NOx STCK-3 Biogas Generator C (635145, ) hr & 24-hrs EF Average 14% NOx STCK-4 Biogas Generator C (635150, ) hr & 24-hrs EF Average 14% NOx STCK-5 Biogas Generator C (635155, ) hr & 24-hrs EF Average 14% NOx STCK-6 Biogas Generator C (635160, ) hr & 24-hrs EF Average 14% NOx STCK-7 Biogas Generator C (635162, ) hr & 24-hrs EF Average 14% NOx FLARE Flare C n/a (635170, ) hr & 24-hrs EF Average 0.3% SPM - STCK-1 Biogas Generator C (635135, ) hrs EF Average 14% SPM - STCK-2 Biogas Generator C (635140, ) hrs EF Average 14% SPM - STCK-3 Biogas Generator C (635145, ) hrs EF Average 14% SPM - STCK-4 Biogas Generator C (635150, ) hrs EF Average 14% SPM - STCK-5 Biogas Generator C (635155, ) hrs EF Average 14% SPM - STCK-6 Biogas Generator C (635160, ) hrs EF Average 14% SPM - STCK-7 Biogas Generator C (635162, ) hrs EF Average 14% SPM - FLARE Flare C n/a (635170, ) hrs EF Average 0.8% CO STCK-1 Biogas Generator C (635135, ) 1.43 ½-hr EF Average 14% CO STCK-2 Biogas Generator C (635140, ) 1.43 ½-hr EF Average 14% CO STCK-3 Biogas Generator C (635145, ) 1.43 ½-hr EF Average 14% CO STCK-4 Biogas Generator C (635150, ) 1.43 ½-hr EF Average 14% CO STCK-5 Biogas Generator C (635155, ) 1.43 ½-hr EF Average 14% CO STCK-6 Biogas Generator C (635160, ) 1.43 ½-hr EF Average 14% CO STCK-7 Biogas Generator C (635162, ) 1.43 ½-hr EF Average 14% CO FLARE Flare C n/a (635170, ) 0.23 ½-hr EF Average 2.3% SO FLARE Flare C n/a (635170, ) hr & 24-hrs EF Average 100% ESDM Report SENES Consultants

29 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Table 3 Dispersion Modeling Input Summary Table Relevant Section of the Regulation Section Title Description of How the Approved Dispersion Model was Used Section 8 Negligible Sources Sources and contaminants that were considered negligible were explicitly identified, and therefore were not modelled, in accordance with s.8 of O.Reg.419/05. See Table 1 Sources and Contaminants Identification Table, Section 3.0, and Appendix B of the ESDM report for more information. Section 9 Same Structure Contamination Not applicable as TH Energy is the only tenant occupying the site, and there is no child care facility, health care facility, senior s residence, long-term care facility or an educational facility located at the Facility. Section 10 Operating Conditions All equipment was assumed to be operating at the maximum operation rates simultaneously for the worst-case corresponding averaging period. See Section 4.1 and Appendix A of the ESDM Report. Section 11 Section 12 Section 13 Section 14 Section 15 Source of Contaminant Emission Rates Combined Effect of Assumptions for Operating Conditions and Emission Rates Meteorological Conditions Area of Modelling Coverage Stack Height for Certain New Sources of Contaminant The emission rate for each significant contaminant emitted from each significant source was estimated, the methodology for the calculation is documented in Table 2 Source Summary Table. See Section 4.1 and Section 4.2 and Appendix A of the ESDM Report for more information. The Operating Conditions were estimated in accordance with s.10(1)1 and s.11(1)1 of O. Reg. 419/05 and are therefore considered to result in the highest concentration at a POI that the Facility is capable of for the contaminants emitted. See Section 4.1 and Section 4.2 of the ESDM Report as well as Appendix A. The MOE Crops Central Region Toronto, York-Durham, Halton- Peel Surface and Profile dataset were used in the AERMOD model. Crops was selected based on the proximity of the site to Lake Ontario. Per Section 6.6 of the ADMGO anomalous meteorological conditions were not considered. Completed in accordance with s. 14 of O. Reg. 419/05 for AERMOD modelling runs using the MOE Nested Grid. The stack height for all major emission sources are greater than 2.0 times the height of the site building and meets the Good Engineering Practice (GEP) stack height requirement of s. 15. Section 16 Terrain Data MOE Terrain Data Used. Section 17 Averaging Periods ½-hour (CO), 1-hour (NOx and SO 2 ) and 24-hour (NOx, SO 2 and SPM) averaging periods were used for AERMOD runs ESDM Report SENES Consultants

30 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Table 4 Emission Summary Table Toronto Hydro Biogas Cogeneration Facility Contaminant Total Facility Air Dispersion Averaging Maximum POI MOE POI Limiting Effect Regulation Percentage of Contaminant Name CAS # Emission Rate Model Used Period Concentration Limit Schedule # MOE POI Limit (g/s) (hours) (ug/m3) (ug/m3) (%) NOx AERMOD Health Schedule 3 75% Health Schedule 3 83% SPM AERMOD Visibility Schedule 3 3% CO AERMOD ½ 3750* 6,000 Health Schedule 3 63% SO AERMOD Health & Vegetation Schedule 3 3% Health & Vegetation Schedule 3 2% Notes on Column labeled Maximum POI Concentration: - Maximum concentrations do not include anomalous meteorological conditions, which were removed per MOE Air Dispersion Modelling Guideline Section * 1-hour value converted to 1/2 hour by multiplying by ESDM Report SENES Consultants

31 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 1 SITE LOCATION PLAN Proposed Location of TH Energy Biogas Cogeneration Facility Ashbridges Bay Treatment Plant ESDM Report SENES Consultants

32 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 2 LAND USE ZONING DESIGNATION PLAN Approximate Site Location ESDM Report SENES Consultants

33 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 3 DISPERSION MODELLING PLAN Source Locations Property Boundary Building Footprints (Building Height = 5.0 m) ESDM Report SENES Consultants

34 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 4 PROCESS FLOW DIAGRAM FLARED TO ATMOSPHERE DISCHARGE TO ATMOSPHERE HEAT RECOVERY UNIT THERMAL ENERGY (HOT WATER) TO ASHBRIDGES BAY TREATMENT PLANT BIOGAS SUPPLY FROM ABTP POWER TO ABTP UNDER OPA FIT PROGRAM BIOGAS-FIRED GENERATOR 7 GENERATORS TOTAL RATED AT MW EACH BIOGAS TREATMENT LEGEND: BIOGAS POWER EXHAUST GASES HOT WATER ESDM Report SENES Consultants

35 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 5 3 KM SATELLITE IMAGE ESDM Report SENES Consultants

36 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant FIGURE 6 TERRAIN ELEVATION AND DISPERSION MODELLING RECEPTORS ESDM Report SENES Consultants

37 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant APPENDIX A SUPPORTING CALCULATIONS ESDM Report SENES Consultants

38 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Appendix A OPG Nanticoke Generating Station Supporting Calculations Usage Rates The following maximum usage rates correspond to the operating conditions that would result in the maximum emission rates in accordance with s.10 and s.11 of O. Reg. 419/05. Source Designation Description Maximum Rating STCK-1 to STCK-7 Biogas-Fired Generators 1966 bhp continuous operation FLARE Flare Periodic operation Conservatively assumed to be operating a maximum of 3 hours per day ESDM Report A-1 SENES Consultants

39 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Source ID STCK-1 to STCK-7: Biogas-Fired Generator Emissions Methodology: Emission Factor (EF) The generators are GE Jenbacher J420 Biogas-Fired Engines with an input power rating of 1966 bhp (1466 kw). Emission factors were provided by the equipment supplier. Note that one (1) engine (STK-7) can also fire natural gas, and is equipped with Selective Catalytic Reduction (SCR) technology to reduce emissions of NOx only when firing natural gas. When operating with natural gas emissions comply with MOE emission limits for small combustion engine generators: NOx: 0.40 kg/mwh PM: 0.02 kg/mwh NMHC: 0.19 kg/mwh CO: 3.5 kg/mwh Worst case emissions are considered to be when all seven (7) generators are firing with biogas: NOx: 1.6 kg/mwh PM: 0.03 kg/mwh CO: 3.5 kg/mwh Below is a sample calculation for NOx emissions from the biogas-fired generator (STCK-1): Power = NO x = 1466 kw 1.6 kg-nox / MWh NOx g 1.6 s ,000 kw 1,000 1 kg 1 hour 0.65 g NOx/sec 3,600 sec The following table outlines emission rates from each of the seven (7) generators. Source Description Emission Factor Emission Rate ID (kg/mwh) (g/s) STCK-1 to STCK-7 Data Quality: Average NOx SPM CO Section of the ESDM Procedure Document titled Average Data Quality" Emission Estimating Techniques includes emission factor calculations with tests on a reasonable number of facilities. Operating Conditions: The emission rate calculation for this source is based on the biogas-fired generator operating at maximum capacity during the averaging period ESDM Report A-2 SENES Consultants

40 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Source ID FLARE: Flare Methodology: Emission Factor (EF) The manufacturer provided worst case emission rates for all contaminants based on the specific requirements of the Toronto Hydro Biogas Cogeneration project. Specifications are provided in Appendix D. Sample Calculations: Not required as emission rates are provided in g/s. Note that the flare operates a maximum of 3 hours per day, therefore 1 hour values in the table below are considered to be worst case emissions per hour, and 24 hour values in the table below are based on 3 hours of operation per day spread over a 24 hour period. The following table outlines the emission rates from the flare. Source Description Averaging Emission Rate ID Period (g/s) NOx 1 hour hour SO 2 1 hour FLARE 1 hour SPM 24 hour CO 1 hour 0.23 Data Quality: Average Section of the ESDM Procedure Document titled Average Data Quality" Emission Estimating Techniques includes emission factor calculations with tests on a reasonable number of facilities. Operating Conditions: The emission rate calculation for this source is based on the natural-gas fired generator operating at maximum capacity during the averaging period ESDM Report A-3 SENES Consultants

41 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant APPENDIX B SUPPORTING INFORMATION FOR ASSESSMENT OF NEGLIGIBILITY ESDM Report B-1 SENES Consultants

42 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant Supporting Information for Assessment of Negligibility Sources were screened for negligibility using the following screening protocols listed in the ESDM Procedure Document Source Listed on Table B-1 The results of screening are discussed in greater detail in the following text. The results of screening are discussed in greater detail in the following text. Flare Source Emissions of H2S from the flare source is considered negligible based on screening-out with dispersion factors provided in Table B-1 of the ESDM Procedure Document. H2S: Urban Dispersion Factor 8,700 µg/m 3 per g/s x g/s = µg/m 3 H2S Schedule 3 Standard is 7 µg/m 3 for 24-hr averaging period and 13 µg/m 3 for 10-min averaging period ESDM Report B-2 SENES Consultants

43 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant APPENDIX C ELECTRONIC COPIES OF THE COMPLETE AERMOD INPUT AND OUTPUT FILES ESDM Report C-1 SENES Consultants

44 Emission Summary and Dispersion Modelling Report Toronto Hydro Biogas Cogeneration Plant APPENDIX D MANUFACTURER S SPECIFICATIONS ESDM Report SENES Consultants

45 Technical Description Cogeneration Unit JMS 420 GS-B.L JMS420v81 Digester Gas Electrical output Thermal output 1425 kw el MBTU/hr Emission values NOx < 500 mg/nm³ (5% O2) /Kelly JMS420v81 600V Copyright (rg) 1/34

46 0.01 Technical Data (at module) 4 Main dimensions and weights (at module) 5 Connections Technical data of engine 6 Thermal energy balance 6 Exhaust gas data 6 Combustion air data 6 Output / fuel consumption 7 Sound pressure level 7 Sound power level Technical data of generator 8 Reactance and time constants Technical data of heat recovery 9 General data - Hot water circuit 9 Mixture Intercooler (1st stage) 9 Mixture Intercooler (2nd stage) (Intercooler separate) 9 Heat exchanger lube oil 9 Heat exchanger engine jacket water 9 Exhaust gas heat exchanger 9 connection variant F 10 echnical parameters Scope of supply - Module Spark ignited gas engine Engine accessories Commissioning spare parts Standard tools (1/plant) Self-excited self-regulated three phase generator Module accessories Engine jacket water system Automatic lube oil replenishing system Heat recovery Painting Engine generator control panel DIA.NE XT Remote Data-Transfer with DIA.NE XT - HERMES Starting system Electric jacket water preheating Flexible connections /Kelly JMS420v81 600V Copyright (rg) 2/34

47 2.00 Electrical equipment Single synchronizing Automatic Grid monitoring device Power control Generator switchgear Delivery, installation and commissioning Carriage Unloading Assembly and installation Storage Start-up and commissioning Trial run Emission measurement (exhaust gas analyser) Limits of delivery Factory tests and inspections Engine tests Generator tests Module tests Documentation /Kelly JMS420v81 600V Copyright (rg) 3/34

48 0.01 Technical Data (at module) Data at: Full load Part Load Fuel gas LHV BTU/scft % 75% 50% Energy input MBTU/hr [2] Gas volume scfhr *) Mechanical output bhp [1] Electrical output kw el. [4] Recoverable thermal output ~ Intercooler 1st stage MBTU/hr ~ Lube oil MBTU/hr ~ Jacket water MBTU/hr ~ Exhaust gas cooled to 248 F MBTU/hr Total recoverable thermal output MBTU/hr [5] Heat to be dissipated ~ Intercooler 2nd stage MBTU/hr ~ Surface heat ca. MBTU/hr [7] ~ Balance heat MBTU/hr Spec. fuel consumption of engine BTU/bhp.hr [2] Lube oil consumption ca. gal/hr [3] 0,14 ~ ~ Electrical efficiency % 40,3% 38,9% 36,3% Thermal efficiency % 47,5% 48,3% 51,3% Total efficiency % [6] 87,8% 87,3% 87,6% Hot water circuit: Forward temperature F 194,0 170,2 167,2 Return temperature F 158,0 158,0 158,0 Hot water flow rate GPM 318,5 318,5 318,5 *) approximate value for pipework dimensioning [_] Explanations: see Technical parameters All heat data is based on standard conditions according to attachment Deviations from the standard conditions can result in a change of values within the heat balance, and must be taken into consideration in the layout of the cooling circuit/equipment (intercooler; emergency cooling;...). In the specifications in addition to the general tolerance of +/- 8% on the thermal output a further reserve of 10% is recommended for the dimensioning of the cooling requirements /Kelly JMS420v81 600V Copyright (rg) 4/34

49 Main dimensions and weights (at module) Length in ~ 280 Width in ~ 80 Height in ~ 90 Weight empty lbs ~ Weight filled lbs ~ Connections Hot water inlet and outlet in/lbs 4''/145 Exhaust gas outlet in/lbs 12''/145 Fuel gas (at gas train) in/lbs 6''/232 Fuel Gas (at module) in/lbs 5''/145 Water drain ISO 228 G ½'' Condensate drain in/lbs 2''/145 Safety valve - jacket water ISO 228 in/lbs 2x1½''/2.5 Safety valve - hot water in/lbs 2½''/232 Lube oil replenishing (pipe) in 1,1 Lube oil drain (pipe) in 1,1 Jacket water - filling (flex pipe) in 0,5 Intercooler water-inlet/outlet 1st stage in/lbs 4''/145 Intercooler water-inlet/outlet 2nd stage in/lbs 2½''/ /Kelly JMS420v81 600V Copyright (rg) 5/34

50 0.02 Technical data of engine Manufacturer GE Jenbacher Engine type J 420 GS-A81 Working principle 4-Stroke Configuration V 70 No. of cylinders 20 Bore in 5,71 Stroke in 7,28 Piston displacement cu.in Nominal speed rpm Mean piston speed in/s 437 Filling capacity lube oil gal 121 Filling capacity water gal 61 Length in 148 Width in 62 Height in 80 Weight dry lbs Weight filled lbs Moment of inertia lbs-ft² 276,26 Direction of rotation (from flywheel view) left Flywheel connection SAE 18'' Radio interference level to VDE 0875 N Starter motor output kw 9 Starter motor voltage V 24 Thermal energy balance Energy input MBTU/hr Intercooler MBTU/hr Lube oil MBTU/hr 549 Jacket water MBTU/hr Exhaust gas total MBTU/hr Exhaust gas cooled to 356 F MBTU/hr Exhaust gas cooled to 212 F MBTU/hr Surface heat MBTU/hr 249 Balance heat MBTU/hr 119 Exhaust gas data Exhaust gas temperature at full load F [8] 878 Exhaust gas mass flow rate, wet lbs/hr Exhaust gas mass flow rate, dry lbs/hr Exhaust gas volume, wet scfhr Exhaust gas volume, dry scfhr Max.admissible exhaust back pressure after engine psi 0,870 Combustion air data Combustion air mass flow rate lbs/hr Combustion air volume SCFM Max. admissible pressure drop in front of intake-air filter psi 0,145 base for exhaust gas data: natural gas: 100% CH4; biogas 65% CH4, 35% CO /Kelly JMS420v81 600V Copyright (rg) 6/34

51 Output / fuel consumption ISO standard fuel stop power ICFN bhp Mean effe. press. at stand. power and nom. speed psi 232 Fuel gas type Biogas Based on methane number MN d) 100 Compression ratio Epsilon 12,50 Min./Max. fuel gas pressure at inlet to gas train psi c) Allowed Fluctuation of fuel gas pressure % ± 10 Max. rate of gas pressure fluctuation psi/sec 0,145 Maximum Intercooler 2nd stage inlet water temperature F 131 Spec. fuel consumption of engine BTU/bhp.hr Specific lube oil consumption g/bhp.hr 0,22 Max. Oil temperature F 185 Jacket-water temperature max. F 194 c) Lower gas pressures upon inquiry d) based on methane number calculation software AVL 3.1 Sound pressure level Aggregate b) db(a) re 20µPa 97 31,5 Hz db Hz db Hz db Hz db Hz db Hz db Hz db Hz db Hz db 89 Exhaust gas a) db(a) re 20µPa ,5 Hz db Hz db Hz db Hz db Hz db Hz db Hz db Hz db Hz db 107 Sound power level Aggregate db(a) re 1pW 117 Measurement surface ft² Exhaust gas db(a) re 1pW 123 Measurement surface ft² 67,60 a) average sound pressure level on measurement surface in a distance of 3.28ft according to DIN 45635, precision class 2. b) average sound pressure level on measurement surface in a distance of 3.28ft (converted to free field) according to DIN 45635, precision class 3. Operation with 1200 rpm see upper values, operation with 1800 rpm add 3 db to upper values. Engine tolerance ± 3 db /Kelly JMS420v81 600V Copyright (rg) 7/34

52 0.03 Technical data of generator Manufacturer STAMFORD e) Type PE 734 D2 e) Type rating kva Driving power bhp Ratings at p.f.= 1.0 kw Ratings at p.f. = 0,8 kw Rated output at p.f. = 0,8 kva Rated current at p.f. = 0,8 A Frequency Hz 60 Voltage V 600 Speed rpm Permissible overspeed rpm Power factor lagging 0,8-1,0 Efficiency at p.f.= 1.0 % 97,2% Efficiency at p.f. = 0,8 % 96,3% Moment of inertia lbs-ft² 954,58 Mass lbs Radio interference level to VDE 0875 N Construction B3/B14 Protection Class IP 23 Insulation class H Temperature rise (at driving power) F Maximum ambient temperature F 104 Total harmonic distortion % 1,5 Reactance and time constants xd direct axis synchronous reactance p.u. 3,12 xd' direct axis transient reactance p.u. 0,15 xd'' direct axis sub transient reactance p.u. 0,12 Td'' sub transient reactance time constant ms 10 Ta Time constant direct-current ms 20 Tdo' open circuit field time constant s 2,25 e) GE Jenbacher reserves the right to change the generator supplier and the generator type. The contractual data of the generator may thereby change slightly. The contractual produced electrical power will not change /Kelly JMS420v81 600V Copyright (rg) 8/34

53 0.04 Technical data of heat recovery General data - Hot water circuit Total recoverable thermal output MBTU/hr Return temperature F 158,0 Forward temperature F 194,0 Hot water flow rate GPM 318,5 Design pressure of hot water psi 145 Pressure drop hot water circuit psi 13,05 Maximum Variation in return temperature F +0/-36 Max. rate of return temperature fluctuation F/min 18 Mixture Intercooler (1st stage) Type gilled pipes Design pressure of hot water psi 145 Pressure drop hot water circuit psi 4,35 Hot water connection in/lbs 4''/145 Mixture Intercooler (2nd stage) (Intercooler separate) Type gilled pipes Design pressure of hot water psi 145 Pressure drop hot water circuit psi 10,15 Hot water connection in/lbs 2½''/145 Heat exchanger lube oil Type plate heat exchanger Design pressure of hot water psi 145 Pressure drop hot water circuit psi 2,90 Hot water connection in/lbs 4''/145 Heat exchanger engine jacket water Type plate heat exchanger Design pressure of hot water psi 145 Pressure drop hot water circuit psi 2,90 Hot water connection in/lbs 4''/145 Exhaust gas heat exchanger Type shell-and-tube PRIMARY: Exhaust gas pressure drop approx psi 0,22 Exhaust gas connection in/lbs 12''/145 SECONDARY: Design pressure of hot water psi 87 Pressure drop hot water circuit psi 2,90 Hot water connection in/lbs 4''/ /Kelly JMS420v81 600V Copyright (rg) 9/34

54

55 Technical parameters All data in the technical specification are based on engine full load (unless stated otherwise) at specified temperatures as well as the methane number and subject to technical development and modifications. For isolated operation an output reduction may apply according to the block load diagram. Before being able to provide exact output numbers, a detailed site load profile needs to be provided (motor starting curves, etc.). All pressure indications are to be measured and read with pressure gauges (psi.g.). (1) At nominal speed and standard reference conditions ICFN according to DIN-ISO 3046 and DIN 6271, respectively (2) According to DIN-ISO 3046 and DIN 6271, respectively, with a tolerance of + 5 % (basis: CH4=60 Vol.%; CO 2 =40% Vol.%) (3) Average value between oil change intervals according to maintenance schedule, without oil change amount (4) At p. f. = 1.0 according to VDE 0530 REM / IEC 34.1 with relative tolerances (5) Total output with a tolerance of +/- 8 % (6) According to above parameters (1) through (5) (7) Only valid for engine and generator; module and peripheral equipment not considered (8) Exhaust temperature with a tolerance of +/- 5 % Radio interference level The ignition system of the gas engines complies the radio interference levels of CISPR 12 and EN class B, (30-75 MHz, MHz, MHz) and ( MHz, MHz), respectively. Definition of output ISO-ICFN continuous rated power: Net break power that the engine manufacturer declares an engine is capable of delivering continuously, at stated speed, between the normal maintenance intervals and overhauls as required by the manufacturer. Power determined under the operating conditions of the manufacturer s test bench and adjusted to the standard reference conditions. Standard reference conditions: Barometric pressure: 14.5 psi (1000 mbar) or 328 ft (100 m) above sea level Air temperature: 77 F (25 C) or 298 K Relative humidity: 30 % Volume values at standard conditions (fuel gas, combustion air, exhaust gas) Pressure: 1 atmosphere ( mbar) Temperature: 60 F (15.56 C) /Kelly JMS420v81 600V Copyright (rg) 11/34

56 Output adjustment for turbo charged engines Standard rating of the engines is for an installation at an altitude ft (500 m) and an air intake temperature 86 F (30 C). Derating: > ft (500 m): up to 1.2% / 328 ft (1.2 % / 100 m) > 86 F (30 C): up to 0.89% / F (1.6% / C) and over 104 F (40 C) 1.11% / F (2% / C) If the actual methane number is lower than the specified, the knock control responds. First the ignition timing is changed at full rated power. Secondly the rated power is reduced. These functions are done by the engine management. Parameters for the operation of GE Jenbacher gas engines The following "Technical Instruction of GE JENBACHER" forms an integral part of a contract and must be strictly observed: TI TI Parameters for using a gas compressor Parameters for using a gas compressor The gas quantity indicated under the technical data refers to standard conditions with the given calorific value. The actual volume flow (under operating conditions) has to be considered for dimensioning the gas compressor and each gas feeding component it will be affected by: Actual gas temperature (limiting temperature according to TI ) Gas humidity (limiting value according to TI ) Gas Pressure Calorific value variations (can be equated with methane (CH4) variations in the case of biogas) The gas compressor is designed for a max. relative under pressure of 0.22 psi(g) (15 mbar(g)) and a inlet temperature of 104 F (40 C), if within scope of supply GE Jenbacher /Kelly JMS420v81 600V Copyright (rg) 12/34

57 1.00 Scope of supply - Module Design: The module is built as a compact package. Engine and generator are mounted to the base frame. To provide the best possible isolation from the transmission of vibrations the engine is mounted to the frame by means of anti-vibrational mounts. The remaining vibrations are eliminated by mounting the module on isolating pads (e.g. Sylomer). This, in principle, allows for placing of the module to be directly on any floor capable of carrying the static load. No special foundation is required. Prevention of sound conducted through solids has to be provided locally Spark ignited gas engine Four-stroke, air/gas mixture turbocharged, aftercooled, with high performance ignition system and electronically controlled air/gas mixture system. The engine is equipped with the most advanced LEANOX LEAN-BURN COMBUSTION SYSTEM developed by GE JENBACHER Engine accessories Commissioning spare parts Commissioning spare parts: First equipment with necessary spare parts for operation after commissioning Spark plug sealing rings (20 pieces) Spark plug (1 piece) Spark plug carrier (1 piece) Ignition coil (1 piece) Thermoelement (Cylinder exhaust gas temperature 1 piece) Standard tools (1/plant) Tools for spark plugs (special socket, extension, torque wrench) Tools for removal of oil filter cartridges Feeler gauge 0.35 mm 1 wrench 17 x 19 Screwdriver 10 Grease gun /Kelly JMS420v81 600V Copyright (rg) 13/34

58 Measuring device for valve wear Oscilloscope Adapter for measurements (BNC-BNC, MIL-ZZP) Ultra-Therm 50 spray Pointed pliers (cornered) Box for tools Stroboscope 1.02 Self-excited self-regulated three phase generator The generator consists of the main generator (built as rotating field machine), the exciter machine (built as rotating armature machine) and the voltage regulator with cos. phi-regulator, which is powered by a permanent magnet pilot exciter. Main components Main stator with frame Main stator with 2/3 pitch winding to eliminate neutral currents of 3rd order Terminal box includes main terminals plus auxiliary terminals for thermistor connection and control of regulator Main rotor with sufficiently sized shaft dynamically balanced as per VDI 2060, Grade Q1 Drive end bracket with bearing Non-drive end bracket with bearing Exciter unit with permanent pilot exciter Power factor controller Voltage regulator Electrical data and features Voltage adjustment: +/- 5% rated voltage (+/- 10% short-time for synchronizing) Static voltage accuracy: +/- 1% at no load to full load and power factor speed variation +/- 3%, cold and hot machine Maximum deviation of wave form according to VDE is 5% phase to phase at open circuit Generator suitable for parallel operating with mains and other generators Sustained short circuit current at 3-pole terminal short circuit: minimum 3 times rated current for 5 seconds. Overload capacity according. to IEC 34 - I/VDE 0530 According to VDE 0530 the overspeed test ensues with 1.2 times of rated speed for 2 minutes. Additional components: Electronic voltage regulator Electronic power factor regulator 3 Pt 100 for bearing temperature monitoring 2 Pt 100 for bearing temperature monitoring /Kelly JMS420v81 600V Copyright (rg) 14/34

59 1.03 Module accessories Base frame Welded of structural steel to accommodate engine, generator and heat exchangers. Flexible coupling With torque limiter to couple engine with generator. The coupling isolates the major subharmonics of engine firing impulses from the generator. Bell housing To connect engine with generator housing. With two ventilation and control windows. Anti-vibration mounts Arranged between engine/generator assembly and base frame. Insulating pads (SYLOMER) for placement between base frame and foundation, delivered loose. Exhaust gas connection Connection of exhaust gas turbocharger; including flexible connection to compensate for expansions and vibrations. Combustion air filter Dry type air filter with replaceable filter cartridges, including flexible connection to carburetor and service indicator /Kelly JMS420v81 600V Copyright (rg) 15/34

60 Interface panel Totally enclosed sheet steel cubicle with front door, wired to terminals, ready to operate. Cable entry at bottom. Painting: RAL 7035 Protection: IP 54 external IP 10 internal (protection against direct contact with alive parts) Design according to IEC (EN /1990) and DIN VDE 0660 part 500, respectively. Ambient temperature F (5-40 C), Relative humidity 70 % Dimensions: Height: Width: Depth: 39 in (1000 mm) 39 in (1000 mm) 12 in (300 mm) Power supply from the starter battery charger. Power distribution to the engine mounted auxiliaries (power input from the supplier of the auxiliaries power supply): 3 x 600/347 V, 60 Hz, 16 A Essential components installed in interface panel: Terminal strip Decentralized input and output cards, connected by an RS 485 interface to the central engine control of the module control panel. Speed monitoring with switch point for overspeed (monitored by overspeed relays and the central engine control) Relays, contacts, fuses, engine contact switch to control valves and auxiliaries Measuring transducer for excitation voltage Engine jacket water system Engine jacket water system Closed cooling circuit, consisting of: Expansion tank Filling device (check and pressure reducing valves, pressure gauge) Safety valve(s) Thermostatic valve Required pipework on module Vents and drains Electrical jacket water pump, including check valve Jacket water preheat device /Kelly JMS420v81 600V Copyright (rg) 16/34

61 Automatic lube oil replenishing system Automatic lube oil replenishing system: Includes float valve in lube oil feed line, including inspection glass. Electric monitoring system will be provided for engine shut-down at lube oil levels "MINIMUM" and "MAXIMUM". Solenoid valve in oil feed line is only activated during engine operation. Manual override of the solenoid valve, for filling procedure during oil changes is included. Oil drain By set mounted cock; carried out with a separate flexible tube Aftercooling oil pump: Mounted on the module base frame; it is used for the aftercooling of the turbocharger; period of operation of the pump is 15 minutes from engine stop. Consisting of: Oil pump 250 W, 24 V Oil filter Necessary pipework 1.04 Heat recovery Engine-mounted intercooler and lube oil heat exchanger, jacket water heat exchanger mounted to the engine res. to the module base frame, complete with interconnecting pipe work. The exhaust gas heat exchanger is mounted to the heat recovery module. The insulation of heat exchangers and pipework is not included in GE Jenbacher scope of supply. Heat exchanger - air/fuel mixture to warm water (intercooler) The engine-mounted intercooler is of two stage design. The first stage is integrated with the warm water circuit. The second stage requires low temperature water. Heat exchanger - lube oil to warm water The heat recovery is done by a mounted heat exchanger which is integrated in the warm water circuit. Heat exchanger - engine jacket water to warm water The plate-type heat exchanger is mounted to the module base frame, complete with interconnecting pipework, for recovery of engine jacket water. Heat exchanger - exhaust gas to warm water Single duct, tube-type heat exchanger, provided as a component of the heat recovery system Consisting of: Inlet chamber, with flushing connection for cleaning Tube type heat exchanger Outlet chamber with condensate drain and flushing connection for cleaning Thermocouple for monitoring of exhaust gas outlet temperature /Kelly JMS420v81 600V Copyright (rg) 17/34

62 Thermocouple for monitoring of tube plate temperature (OPTION) Pressure relief valve integrated in the warm water circuit (OPTION) 1.07 Painting Quality: Oil resistant prime layer Synthetic resin varnish finishing coat Color: Engine: RAL 6018 (green) Base frame: RAL 6018 (green) Generator: RAL 6018 (green) Module interface panel: RAL 7035 (light gray) Control panel: RAL 7035 (light gray) 1.11 Engine generator control panel DIA.NE XT Dimensions: Height: Width: Depth: 87 in (2200 mm) [including 8 in (200 mm) pedestal] 32 in (800 mm) 24 in (600 mm) External supply of control power from starter and control batteries. Battery is rated at 24 V DC (tolerance: min. 22 V, max. 30 V, including waviness U pp max. 3.6 V) Supply of power for auxiliaries from auxiliary power panel: 3 x 600/347 V, 60 Hz, 35 A Consisting of: DIA.NE XT (Dialog Network new generation) motor management system System elements visualisation with central engine and module control 1) Visualisation: Industrial control with 7 VGA TFT colour graphics display and 8 function keys. 10-key numeric keyboard for parameter input. Keys for START, STOP, display selection keys and special functions. Interfaces: Ethernet (twisted pair) for connection to DIA.NE WIN server CAN-Bus: bus connection to the intelligent sensors and actuators Power Link: bus connection to the control in- and outputs /Kelly JMS420v81 600V Copyright (rg) 18/34

63 OPTION: Interfacing with the customer s plant management according to GE JENBACHER list of options (3964R, Jenbacher-RK 128, MODBUS-RTU, PROFIBUS-DP) Protection class: IP 65 (front) Dimensions: W x H x D = approx. 8,4 x 10 x 3,75 in (212 x 255 x 3,75 mm) A clear and functional graphic compilation of measured values is displayed on the screen. User prompts are by means of direct-acting display selection keys and function keys. Main displays: Generator interconnection, with electrically measured variables and display of excitation voltage (OPTION: generator winding temperature and generator bearing temperature displays) Oil and engine cooling water circuits, with displays of oil pressure and temperature, and cooling water pressure and temperature. Exhaust gas temperatures in a column graph which also displays the average temperature. Main engine controller Module auxiliary controller Auxiliary systems (status display) Operational data, i.e. operating hours, service hours, number of starts, active power demand (kwh), reactive power demand (kvarh), and measured values for operational logbook. System display, i.e. time, password, brightness, contrast, diagnostics. Recipe handling: Setting, display and storage of all module parameters Alarm management: Efficient diagnostic instrumentation listing all active fault messages both tabular and chronologically, with the recorded time. 2) Central engine and module control: A real-time, modular industrial control system which handles all jobs for module and engine-side sequencing control (start preparation, start, stop, after-cooling, control of auxiliaries), as well as all control functions. Interfaces: Control functions: Speed control in no-load and isolated operation Power output control in parallel operation system; job-specific with respect to internal and external set point values. LEANOX control system for control of boost pressure; dependent upon the generator terminal power and the mixture temperature via the engine-driven air-gas mixer Cylinder selective knocking control: adjustment of the ignition point, power output and (insofar as is locally possible) the mixture temperature in the event of detection of knocking Load sharing between several modules in isolated operation Linear reduction of power output in the event of excessive mixture temperature and ignition failures Interface relays as per the interface list Multi-transducer, to record the following electrically measured variables of the generator: /Kelly JMS420v81 600V Copyright (rg) 19/34

64 Phase current (with slave pointer) Neutral conductor current Voltages Ph/Ph and Ph/N Active power (with slave pointer) Reactive power Apparent power Power factor Frequency An additional 0-20 ma output is produced for active power, as well as a pulse output for active power demand. The following alternator supervisions are integrated with the multi-transducer (max. 8 functions simultaneous): Overload/short-circuit [51], [50] Over voltage [27] Undervoltage [59] Asymmetric voltage [64], [59N] Unbalance current [46] Failure Exitation [40] Overfrequency [81>] Underfrequency [81<] Lockable operation mode selector switch positions: "OFF" No operation is possible, running set will shut down; "MANUAL" Manual operation using start stop buttons; set is not available for fully automatic operation. "AUTOMATIC" Fully automatic operation, according to remote demand signal: Automatic start Fully automatic operation at full load Stop with cooling down run for 1 minute Continuous operation of auxiliaries for 5 minutes after engine shutdown Demand switch with the positions: External demand OFF External demand Override external demand Supply disconnecting device for auxiliaries with lockable circuit breaker Shut-down functions with display: Low lube oil pressure Low lube oil level High lube oil level High lube oil temperature Low jacket water pressure High jacket water pressure High jacket water temperature Overspeed /Kelly JMS420v81 600V Copyright (rg) 20/34

65 Emergency stop/safety loop Gas train failure Start failure Stop failure Engine start blocked Engine operation blocked Ignition failure High mixture temperature Measuring signal failure Overload/output signal failure Generator overload/short circuit Generator over/undervoltage Generator over/underfrequency Generator asymmetric voltage Generator unbalanced load Generator reverse power High generator winding temperature Synchronising failure Cylinder selective knocking failure Warning functions with display: Low jacket water temperature CPU battery failure Operational functions with display: Ready to start Operation (engine running) Generator circuit breaker "ON" Interfaces engine generator control panel Remote signals 1NO = 1 normally open 1NC = 1 normally closed 1 COC = 1 change over contact Ready for automatic start (to Master control) Operation (engine runs) Collective signal "shut down" Collective signal "warning" External (by others) provided command/status signals: Engine starting demand (from Master control) 1NO 1NO 1NC 1NC 1NO /Kelly JMS420v81 600V Copyright (rg) 21/34

66 Remote Data-Transfer with DIA.NE XT - HERMES General HERMES is the remote data transfer solution for DIA.NE XT. HERMES is available via three connection methods and two applications. Connections methods 1.) Modem Site - Customer connection via a Modem (analogue, ISDN, GSM). Scope of supply DIA.NE WIN Server (Industrial PC without display, keyboard or mouse, built into the control panel, including operating system) Modem (analogue, ISDN, GSM) Customer Requirements Modem (analogue, ISDN, GSM) in the customers PC Public telephone connection with connection port for the DIA.NE WIN Server (in the control panel) including over-voltage protection corresponding to the local telecommunication regulations. Public telephone connection with connection port for the customer s PC corresponding to the local telecommunication regulations. 2.) LAN Site - Customer connection via a local network. Scope of supply DIA.NE WIN Server (Industrial PC without display, keyboard or mouse, built into the control panel, including operating system) Ethernet Network card (10/100 BASE T) Customer Requirements Ethernet Network card (10/100 BASE T) Ethernet Cabling between the DIA.NE WIN Server the customers PC. 3.) Internet (OPTION) Site Customer connection via secure Internet access See comments under Technical instruction TI Scope of Supply DIA.NE WIN Server (Industrial PC without display, keyboard or mouse, built into the control panel, including operating system) Ethernet Network card (10/100 BASE T) Firewall Appliance with connection feasibility to a customer network with a maximum of 10 Hosts (Installation and service by GE Jenbacher; during warranty period included, afterwards as a service package with costs) (built into the control panel) /Kelly JMS420v81 600V Copyright (rg) 22/34

67 Feature service package (access monitoring, clock synchronization for server) Customer Requirements Broad band Internet access with at least two official IP addresses. Connection feasibility for the Firewall Appliance to the Internet Router via Ethernet (RJ45 Connector, Network Address Translation (NAT) is not permitted) Applications 1.) DIA.NE WIN (OPTION) DIA.NE WIN is the Windows based man-machine interface for GE Jenbacher gas engines. The system offers extensive facilities for commissioning, monitoring, servicing and analysis of the site. The option DIA.NE WIN extends the visualization of DIA.NE XT with respect to user friendliness, historical analysis and remote use. Several service stations can be independently operated in parallel. The system consists of a central PC (DIA.NE WIN Server) which is built in to the control panel and one or more service stations (DIA.NE WIN Clients). The system runs on a Microsoft Internet Explorer platform. Function Service and monitoring, trend analysis, alarm management, parameter management, long-term data analysis, multi-user system, remote control, OPC (OLE for process control), print and export functions, operating data protocols, available in several languages. Scope of supply Software package DIA.NE WIN on the DIA.NE WIN Server DIA.NE WIN Client License (Right to access of the user to the server on site) Customer requirements Standard PC with keyboard, mouse and monitor (min. resolution 1024*768) 120 V supply for the customers PC Operating system Windows 98, Windows NT, Windows 2000 or Windows XP Microsoft Internet Explorer (min. Version 6.0) including Java support 2.) DIA.NE RMC (OPTION) DIA.NE RMC (Remote Message Control) is the automatic alarm system for DIA.NE XT. DIA.NE RMC can fully automatically transmit essential operational information from the DIA.NE XT Alarm Management to a remote station. The messages can be forwarded to an address, fax machine or mobile phone (SMS). Furthermore the stored messages can be visualized at the remote station. The system consists of a central PC (DIA.NE WIN Server) which is built into the control panel and one or more customer remote stations. Function Automatically transfer of messages to the customer via , fax or SMS. Display and printing of the messages (also distributed via LAN). Automatically and manually transfer of messages, trend data and operating data protocols /Kelly JMS420v81 600V Copyright (rg) 23/34

68 Scope of supply Software package DIA.NE message on the DIA.NE WIN Server Software package DIA.NE control and DIA.NE report on the remote station Only for connection method Internet : Firewall Appliance for customer computer with connection feasibility to a customer network with a maximum of 10 Hosts (Installation and service by GE Jenbacher; during warranty period included, afterwards as a service package with costs) Customer requirements Standard PC with keyboard, mouse and monitor (min. resolution 1024*768) 120 V supply for the customers computer. Operating system Windows 2000 (Professional and Server), Windows XP Professional or Windows Server Internet connection (provider account) for the case that messages from the RMC should be forwarded to an receiver (incl. SMS for mobiles and pagers). (Mobiles and pagers to be provided by the customer). Customer fax software for message forwarding via fax Only for connection method Internet : Broad band Internet access with at least two official IP addresses. Connection feasibility for the Firewall Appliance to the Internet Router via Ethernet (RJ45 Connector, Network Address Translation (NAT) is not permitted) Starting system Starter battery: 2 piece Pb battery with 12 cells, 24 V, 200 Ah (according to DIN 72311), complete with cover plate, terminals and acid tester. Battery voltage monitoring: Monitoring by an under voltage relay. Battery charging equipment: Capable for charging the starter battery with I/U characteristic and for the supply of all connected D.C. consumers. Charging device is mounted inside of the module interface panel or module control panel. General data: Power supply 3 x V, Hz max. power consumption 1060 W Nominal D.C. voltage 24 V(+/-1%) Voltage setting range 24V to 28,8V ( adjustable) Nominal current (max.) 40 A Dimensions ca. 10 x 5 x 5 inch (240 x 125 x 125 mm) Degree of protection IP20 to IEC 529 Operating temperature 32 F 140 F (0 C - 60 C) /Kelly JMS420v81 600V Copyright (rg) 24/34

69 Protection class 1 Humidity class 3K3, no condensation. Natural air convection Standards EN60950,EN50178 UL/cUL (UL508/CSA 22.2) Signalling: Green Led: Output voltage > 20,5V Yellow Led: Overload, Output Voltage < 20,5V Red Led: shutdown 1 ammeter 0-60 A (mounted inside the module interface- or module control panel) Control accumulator: Pb battery 24 VDC/18 Ah Electric jacket water preheating Installed in the jacket water cooling circuit, consisting of: Heating elements Water circulating pump The jacket water temperature of a stopped engine is maintained between 133 F (56 C) and 140 F (60 C), to allow for immediate loading after engine start Flexible connections Following flexible connections per module are included in the GE Jenbacher -scope of supply: No.Connection Unit Dimension Material 2 Warm water in-/outlet in/lbs 4''/145 Stainless steel 1 Exhaust gas outlet in/lbs 12''/145 Stainless steel 1 Fuel gas inlet in/lbs 6''/232 Stainless steel 2 Intercooler in-/outlet in/lbs 2½''/145 Stainless steel 2 Lube oil connection in 1,1 Hose Sealings and flanges for all flexible connections are included /Kelly JMS420v81 600V Copyright (rg) 25/34

70 Exhaust gas bypass The exhaust gas bypass consists of two flaps (electrically driven), to close the inlet and outlet openings at the exhaust gas heat exchanger, and open the exhaust gas bypass duct. The exhaust gas bypass is activated when the exhaust gas heat cannot be fully used. Scope of supply: 2 exhaust flaps, DN 300/PN 10 Electrical motor drive 3 x 600/347 V, 60 Hz Necessary flanges, seals, fixings Flap valve control ON/OFF 2.00 Electrical equipment Totally enclosed floor mounted sheet steel cubicle with front door wired to terminals. Ready to operate, with cable entry at bottom. Naturally ventilated. Protection: IP 40 external, NEMA 12 IP 10 internal (protection against direct contact with live parts) Design according to IEC ( EN /1990 ), DIN VDE 0660 part 500, and DIN 6280, part 7. Ambient temperature F (5-40 C), 70 % Relative humidity Standard painting: Panel: RAL 7035 Pedestal: RAL Single synchronizing Automatic Without voltage balance For automatic synchronization of 1 module with the mains by PLC- technology, integrated with the module control panel. Consisting of: Lockable synchronizing mode selector switch with positions "MANUAL - 0FF - AUTOMATIC" AUTOMATIC: Automatic module synchronization after synchronizing release from the control panel MANUAL: Manual initiation of synchronizing by push button. Speed adjustment and closing of the circuit breaker is automatically controlled via microprocessor /Kelly JMS420v81 600V Copyright (rg) 26/34

71 0FF: Synchronizing is disabled Additional PLC hardware for fully automatic synchronization of each module and monitoring of "CIRCUIT BREAKER CLOSED" signal. Logic for monitoring of: Non-logic breaker positions Switch ON trouble Switch OFF trouble Automatic synchronizing device with three-point output for electronic speed governor adjustment with double voltmeter, double frequency meter and synchronoscope Luminous push button for synchronizing selection (one per module), to indicate automatic synchronizing with the mode selector switch in the AUTOMATIC position, and to initiate synchronizing with the mode selector switch in the MANUAL position Control switch for manual opening of the generator circuit breaker with the mode selector switch in the MANUAL position Required relays for control and monitoring Voltage relay for monitoring of bussbar voltage (only for island operation) Operational indications for: Generator circuit breaker CLOSED Synchronizing selection Mains power available Fault indications for: Circuit breaker closing or opening fault Remote signals 1 NO = 1 normally open 1 NC = 1 normally closed Generator circuit breaker CLOSED 1 NO Required reference and status signals for GE Jenbacher synchronizing system: Generator circuit breaker CLOSED 1 NO Generator circuit breaker OPEN 1 NC Utility tie breaker CLOSED 1 NO Utility tie breaker OPEN 1 NC Generator circuit breaker READY TO CLOSE 1 NO Mains voltage 3 x 120 V Bussbar voltage 3 x 120 V Generator voltage 3 x 600 V /Kelly JMS420v81 600V Copyright (rg) 27/34

72 GE Jenbacher interface-signals to be incorporated in switchgear: CLOSING/OPENING command for generator circuit breaker (permanent contact) Trip signal connected to undervoltage trip of C.B. 1 NO + 1NC 1 NO Voltage converter at star-star connection with min. 50 VA and Kl Grid monitoring device Function: For immediate disconnection of the generator from the grid in case of grid failures. Consisting of: High/low voltage monitoring High/low frequency monitoring Protection monitoring against micro-interruptions of the grid Scope of supply: Digital grid protecting relay with storage of defect datas, indication of reference dimensions as well as monitoring by itself Power control According to external signal Function: The external potential free (0/4-20 ma = % of nominal power) signal is a set value for the power control. At plants with multiple modules, this signal can be used in a series loop on every Engine Management System. This provides an equal load sharing between all modules /Kelly JMS420v81 600V Copyright (rg) 28/34

73 2.04 Generator switchgear Dimensions: Height: Width: Depth: 87 in (2200 mm) (including 8 in [200 mm] pedestal) 24 in (600 mm) 24 in (600 mm) (32 in [800 mm] if telescopic circuit breakers are used) Essential components installed in power cubicle: Power part 1 motorized 3-phase circuit breaker with integrated electronic overload and short circuit relays, containing: Adjustable overload protection Adjustable short circuit protection with short time delay Breaking capacity: 40 ka Peaking capacity: 84 ka Undervoltage trip coil 24 V DC 3 x 1 FS 5 current transformers, for measuring (.../5A) 1 x 4-wire copper bussbar system (L1, L2, L3, PEN), with connection facilities for incoming and outgoing cables Control and auxiliary relays, terminal block for control cables, Plexiglas protection for live parts, spare space for additional relays Panel ventilator Remote signals (potential free contacts): Overload / short circuit generator circuit breaker Generator circuit breaker ON Generator circuit breaker OFF Generator transformer current 3 x 5 A, 1 FS 5, 15 VA Generator voltage (measuring voltage) / V, 10 A Voltage for auxiliaries / V, 20 A Generator voltage for synchronizing system / V, 10 A Voltage of bussbar for synchronizing system / V, 10 A 1 NC 1 NO 1 NC Terminals are provided at the synchronizing device for the incoming signal "GENERATOR-CIRCUIT BREAKER ON" /Kelly JMS420v81 600V Copyright (rg) 29/34

74 4.00 Delivery, installation and commissioning 4.01 Carriage DDU Site Unloading Unloading, moving of equipment to point of installation, mounting and adjustment of delivered equipment on intended foundations is not included in GE Jenbacher limit of delivery Assembly and installation Assembly and installation of all GE Jenbacher -components is not included in GE Jenbacher limit of delivery Storage The customer is responsible for secure and appropriate storage of all delivered equipment Start-up and commissioning Start-up and commissioning with the GE Jenbacher start-up and commissioning checklist is included Trial run After start-up and commissioning, the plant will be tested in an 8-hour trial run. The operating personnel will be introduced simultaneously to basic operating procedures Emission measurement (exhaust gas analyser) Emission measurement by GE Jenbacher personnel, to verify that the guaranteed toxic agent emissions have been achieved (costs for measurement by an independent agency will be an extra charge) /Kelly JMS420v81 600V Copyright (rg) 30/34

75 5.01 Limits of delivery Electrical Module: At terminals of module interface panel At terminals of generator terminal box (screwed glands to be provided locally) Module control panel: At terminal strips Auxiliaries: At terminals of equipment which is supplied separately Warm water At inlet and outlet flanges on module At inlet and outlet flanges of the exhaust gas heat recovery system Low temperature water At inlet and outlet flanges at module Exhaust gas At outlet flange of exhaust gas connection At inlet and outlet flanges of the exhaust gas heat recovery system Combustion air The air filters are set mounted Fuel gas At inlet and outlet flanges of gas train At inlet flange of gas pipework on module Lube oil At lube oil connections on module Draining connections and pressure relief At module Condensate At condensate drain on exhaust gas heat exchanger Insulation Insulation of heat exchangers and pipework is not included in our scope of supply and must be provided locally /Kelly JMS420v81 600V Copyright (rg) 31/34

76 First filling The first filling of module, (lube oil, engine jacket water, anti freeze-, anti corrosive agent, battery acid) is not included in our scope of supply. The composition and quality of the used consumables are to be strictly monitored in accordance with the "Technical Instructions" of GE JENBACHER. Suitable bellows and flexible connections must be provided locally for all connections. Cables from the module must be flexible /Kelly JMS420v81 600V Copyright (rg) 32/34

77 5.02 Factory tests and inspections The individual module components shall undergo the following tests and inspections: Engine tests Carried out according to DIN 3046 at GE Jenbacher test bench. The following tests are made at 100%, 75% and 50% load, and the results are reported in a test certificate: Engine output Fuel consumption Jacket water temperatures Lube oil pressure Lube oil temperatures Boost pressure Exhaust gas temperatures, for each cylinder Generator tests Carried out on the premises of the generator supplier Module tests The engine will be tested with natural gas (Russian Natural gas with methane number 94). The technical data according to the specification can only be demonstrated to a certain extent with the available natural gas. Carried out commonly with module control panel at GE Jenbacher test bench, according to ISO 8528, DIN The following tests are made and the results are reported in a test certificate: Visual inspection of scope of supply per specifications. Functional tests per technical specification of control system. Starting in manual and automatic mode of operation Power control in manual and automatic mode of operation Function of all safety systems on module Measurements at 100%, 75% and 50% load: Frequency Voltage Current Generator output Power factor Fuel consumption Lube oil pressure Jacket water temperature Boost pressure Mixture temperature Exhaust emission (NOx) In cases where the generator to be delivered is a middle voltage generator, and/or when necessary on the grounds of delivery date, the aggregate test run will be carried out with a test generator. To prove characteristics of the above components, which are not tested on the test bench by GE JENBACHER, the manufacturers certificate will be provided /Kelly JMS420v81 600V Copyright (rg) 33/34

78 5.03 Documentation 60 days after receipt of a technically and commercially clarified order: Module drawing Technical diagram Drawing of control panel List of electrical interfaces Technical specification of control system Technical drawing auxiliaries (if included in GE Jenbacher-limit of delivery) At delivery: Wiring diagrams Cable list At start-up and commissioning (or on clients request): Operating and maintenance manual Spare parts manual Operation report log /Kelly JMS420v81 600V Copyright (rg) 34/34